<?xml version="1.0"?>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:include schemaLocation="SiteMapType.xsd" />
  <xs:element name="SiteMap" type="SiteMapType">
    <xs:unique name="AreaIdMustBeUnique">
      <xs:selector xpath="Area" />
      <xs:field xpath="@Id" />
    </xs:unique>
  </xs:element>
</xs:schema>
